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Ultra High Temperature Process Tray Structural Enhancement

IP.com Disclosure Number: IPCOM000033865D
Publication Date: 2004-Dec-30
Document File: 3 page(s) / 500K

Publishing Venue

The IP.com Prior Art Database

Abstract

Disclosed is a method that provides improved thermal impact resistance for existing ultra high temperature (UHT) trays. Benefits include a solution that can work with a variety of form factors.

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Ultra High Temperature Process Tray Structural Enhancement

Disclosed is a method that provides improved thermal impact resistance for existing ultra high temperature (UHT) trays. Benefits include a solution that can work with a variety of form factors.

Background

The current UHT trays are not strong enough to withstand new processing conditions (see   Figure 1). The trays warp excessively, causing handling errors and unacceptable failure rates. This, in turn, impacts machine use, true UPH, and the number of machines required to support expected volumes.

General Description

The disclosed method uses a stamped and formed tray stiffener, with a full perimeter continuous flange, that is easily manufactured and installed. Once installed, the trimmed top edge of the stiffener acts as a built-in retention device. This design and methodology works with existing injection molded trays, and does not require any tooling changes (see Figures 2 and 3).

Because all existing UHT trays have standard JEDEC-style perimeters, the length and width are essentially equal; this enables the disclosed method to work with a variety of assembly form factors. Installing the stiffener/tray assembly is relatively easy; it is pressed in by hand, and the edges are positioned so that they latch into the tray for self retention.

Advantages

The following are advantages of the disclosed method:

§         Uses the existing mold for the IMT portion.

§         Works with a variety of form factors.

§         Provides x and y axis wa...